• 
  Michael 'Gibbo' Gibson

  1 episode
• 
  Rob Bredl

   Himself - Host (unknown episodes)
• 
  John Robbo Robinson

  Self
• 
  Robert J. Raven

  Arachnologist
• 
  Lyn Abra

  Australian Reptile Park
• 
  Joe Bredl

  Self
• 
  Karla Bredl

  Self
• 
  George Ellis

  Byron Bay Snake Patrol

• 
  Gordon C. Grigg

  Professor of Zoology
• 
  Kurt Walker

  Self
• 
  Lisa Walker

  Self
• 
  Rodney Fox

  Shark Specialist
• 
  Julian Kerbis Peterhans

  Roosevelt University, Field Museum Chicago
• 
  Christophe Guinet

  Zoologist
• 
  Peter Bredl

  Self

• 
  Patrick Martin-Vegue

  Tiger Island Dream World
• 
  Bryan Grieg Fry

  Toxinologist